Panasonic KX-NSX2000 Operating Manual page 182

1.11.1 If a Doorphone/Door Opener is Connected
To answer a call from the doorphone
PT/SLT/PS/SIP Extn.
Off-hook.
To call the doorphone
PT/SLT/PS/SIP Extn.
Off-hook.
•
If no one answers a doorphone call within a specified time period, the call is cancelled.
Opening a Door (Door Open)
Some extensions may be prohibited from using this feature.
From a specified extension
PT/SLT/PS/SIP Extn.
Off-hook.
From any extension while talking to the doorphone
PT/SLT/PS/SIP Extn.
5
C.Tone
Enter 5.
182 Operating Manual
3 1
Enter 31.
5 5 doorphone no.
Enter doorphone
Enter 55.
number (3 digits).
On-hook.
doorphone no.
C.Tone
Enter doorphone
number (3 digits).
C.Tone
Talk.
On-hook.